<?php
use yii\helpers\Html;
$this->title = 'hell world';
$this->beginBlock('block1');
echo "<h2>hello girl, are you ok?</h2>";
$this->endBlock();
$this->registerMetaTag(['name' => 'keywords', 'content' => 'yii, framework, php']);
?>
<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title><?= Html::encode($this->title) ?></title>
</head>
<body>
    <?= Html::encode($message) ?>
    <?= $this->blocks['block1'] ?>

</body>
</html>